Alert archive / Oklahoma / Tornado Warnings in 1993

Tornado Warning 13, NWS Tulsa, OK

May 17, 1993Nowata County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 17, 1993, 9:39 PM CDT for Nowata County, Oklahoma. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
May 17, 1993, 9:39 PM CDT (02:39 UTC)
Expired
May 17, 1993, 10:15 PM CDT
In force
36 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Nowata County, OK

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 2.7 hours before the alert went out and 162 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1993-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 880 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1993-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 318 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
880 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
776 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
318 m²/s²
0-3 km storm-relative helicity
349 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTUL 180241
TORTUL
OKC105-180315-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
939 PM CDT MON MAY 17 1993
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1015 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST OKLAHOMA
 
   ...NORTHERN NOWATA COUNTY
 
AT 937 PM...NATIONAL WEATHER SERVICE RADAR INDICATED A POSSIBLE TORNADO
5 MILES WEST OF SOUTH COFFEYVILLE. SOUTH COFFEYVILLE IS IN THE PATH OF
THE STORM. MOVEMENT WAS EAST 25 MPH. RESIDENTS OF SOUTH COFFEYVILLE
SHOULD TAKE COVER NOW.
 
 
WATCH FOR SIGNS OF DEVELOPING STORMS.  LARGE HAILSTONES AND UNUSUALLY
LOW SWIRLING CLOUDS ARE MANY TIMES SEEN NEAR DEVELOPING TORNADOES.
STRONG DAMAGING WINDS AND TORNADOES OFTEN PRODUCE A LOUD ROARING
SOUND THAT CAN BE HEARD IN THE VICINITY OF STORMS. FREQUENT AND
DANGEROUS LIGHTNING OCCURS WITH MOST SEVERE THUNDERSTORMS.
 
KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 17, 8:31 PM CDTSevere Thunderstorm WarningTSAOsage59 min
May 17, 8:46 PM CDTSevere Thunderstorm WarningTSAOsage59 min
May 17, 9:07 PM CDTSevere Thunderstorm WarningTSAPawnee68 min
May 17, 9:11 PM CDTSevere Thunderstorm WarningTSANowata64 min
May 17, 9:22 PM CDTSevere Thunderstorm WarningTSAOsage68 min
May 17, 9:34 PM CDTSevere Thunderstorm WarningTSACreek56 min
May 17, 9:46 PM CDTSevere Thunderstorm WarningTSATulsa, Washington59 min
May 17, 10:07 PM CDTSevere Thunderstorm WarningTSANowata68 min
May 17, 10:10 PM CDTSevere Thunderstorm WarningTSARogers, Tulsa65 min
May 17, 10:20 PM CDTSevere Thunderstorm WarningTSAWagoner55 min
May 17, 10:24 PM CDTSevere Thunderstorm WarningTSACraig, Mayes66 min
May 17, 10:27 PM CDTSevere Thunderstorm WarningTSACreek63 min
May 17, 10:33 PM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee57 min
May 17, 10:49 PM CDTSevere Thunderstorm WarningTSAMuskogee56 min
May 17, 11:00 PM CDTSevere Thunderstorm WarningTSACherokee, Delaware60 min
May 17, 11:00 PM CDTSevere Thunderstorm WarningTSAOttawa60 min
May 17, 11:10 PM CDTSevere Thunderstorm WarningTSAWagoner65 min
May 17, 11:10 PM CDTSevere Thunderstorm WarningTSAMcIntosh65 min
May 17, 11:36 PM CDTSevere Thunderstorm WarningTSAAdair69 min
May 17, 11:47 PM CDTSevere Thunderstorm WarningTSASequoyah58 min
May 17, 11:48 PM CDTSevere Thunderstorm WarningTSAHaskell, Pittsburg57 min
May 18, 12:22 AM CDTSevere Thunderstorm WarningTSALeFlore68 min

Nearby

Tornado Warnings in Oklahoma, 1993Every tornado warning in 1993Tornadoes in 1993

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.